Improvement in covers, griddles



1. w. LAMB.

cover, Griddle, &c.", of Stove-Tops. No, 164.190, P atented,1une8,1875.

zm'acz UNITED STATES.

PATENT OFFIcE.

J. WARREN LAMB, WHITESTONE, NEW YORK.

IMPROVEMENT IN COVERS, GRIDDLES, &c., OF STOVE-TOPS.

Specification forming part of Letters Patent No. 164,190, dated June 8,1875 application filed May 25, 1875.

which the following is a specification:

Heretofore the covers, griddles, centerpieces or bridges, and othermovable parts of stove-tops have usually and, so far as my knowledgeextends, invariably been made of cast-iron. It is well known that suchcastmetal articles are very liable to be cracked and broken, as, forinstance, if water be dropped on them when they are hot. I havediscovered that this defect can be completely remedied by making them ofmalleable iron that is to say, by first casting them and then subjectingthem to the known process of malleableization. In this way, whileretaining all the advantages on the score of ease and economy due to themanufacture by casting, I obtain an article which is not open to theobjections above noted.

The principal advantages gained by my invention are, first, lightness,the weight of the article not exceeding two-thirds, and, in some cases,one-half that required for a similar castiron article; second,non-liability of breakage,

either when handled or when used on the stove or range. Mymalleable-iron covers have been taken from the stove when red-hot, andin this state plunged into cold water without the least injuriouseifect.

The accompanying drawing represents a cover made in accordance with myinvention.

It will be understood, as above stated, that my invention applies notonly to the covers, but to the other movable parts of stove or rangetops.

I do not deem it necessary to describe the malleableizin g process, asthat is well known. To carry my invention into effect all that is neededis to cast the cover or other part in the usual way, and then to subjectit to the process of malleableizing.

W hat I claim, and desire to secure by Letters Patent, is

A cover, griddle, or other movable part of the top of a stove or rangemade of malleable iron, substantially as described.

In testimony whereof I have hereunto signed my name this 20th day ofMay, A. D. 1875.

J. WARREN LAMB. Witnesses JAMES W. HILL, S. D. HUTTON.

